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A208150
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Expansion of (1 + 2*Product_{i>=1} (1 + x^(8*i - 1)))/(-1 + Product_{i>=1} (1 - x^(8*i - 1))).
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0
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-2, 3, 0, 0, 0, 0, 0, 0, -3, 0, 0, 0, 0, 0, 0, -4, 3, 0, 0, 0, 0, 0, 0, -3, -3, 0, 0, 0, 0, 0, -4, 2, 3, 0, 0, 0, 0, 0, -3, -9, -3, 0, 0, 0, 0, -4, 1, 5, 3, 0, 0, 0, 0, 1, -15, -9, -3, 0, 0, 0, -4, 0, 6, 5, 3, 0, 0, 0, 5, -20, -21, -12, -3, 0, 0, -4, -1, 16
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OFFSET
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0,1
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LINKS
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EXAMPLE
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-3/x^7 - 2 + 3*x -3*x^8 - 4*x^15 + 3*x^16 - 3*x^23 - 3*x^24 - 4*x^30 + ...
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MATHEMATICA
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Table[SeriesCoefficient[
Series[(1 + 2*Product[1 + x^(8*i - 1), {i, 1, Infinity}])/(-1 +
Product[(1 - x^(8*i - 1)), {i, 1, Infinity}]), {x, 0, 100}],
n], {n, 0, 100}]
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CROSSREFS
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KEYWORD
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sign,less
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AUTHOR
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STATUS
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approved
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